Coolant Expansion Tank, Rein - X3/X4 28i, 35i M40i

Replacement coolant reservoir identical to the original BMW part #17138616418

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Price:
$65.99

New coolant expansion reservoir tank for F25 X3 and F26 X4, including 28i, 28d, 35i, and M40i.

It is very common for this expansion tank to get brittle and crack over time, leaking coolant, causing overheating, and potentially stranding you on the side of the road. The constant hot/cold temperatures and positive pressure of the cooling system stress the plastic until eventually a crack develops. If you are replacing any other part of the cooling system in the X3/X4, we suggest inspecting and replacing this tank as a preventative measure.

This is an expansion tank manufactured by Rein (CRP) Automotive - an original supplier to BMW for many cooling system components. As an OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.

BMW Fitments:

X3 Series
F25 X3 (2011-2017) > X3 sDrive28i
F25 X3 (2011-2017) > X3 xDrive28d Diesel
F25 X3 (2011-2017) > X3 xDrive28i
F25 X3 (2011-2017) > X3 xDrive35i
X4 Series
F26 X4 (2015-2018) > X4 35i xDrive
F26 X4 (2015-2018) > X4 M40i xDrive
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